My First Time For PHP-PHP Tutorial-php.cn

前言

第一次接触PHP，功能需求很简单：负责提供WEB接口，接收数据，然后与数据库交互，最终响应XML结果。过程中接触了PHP的很多常用语法和功能，比如PDO对数据库的操作、XML操作、面向对象、正则表达式、输出输出......等等。基本是上网搜索示例，然后自己摸索着写代码，因为N年来一直写的是.Net，所以项目过程中受到.Net很大影响，用了三层构架，甚至为每个PHP接口写了一个类似CodeBehind的Class，没有时间了解PHP下的开发框架，完全按自己的想法搭建的项目。在此篇随笔记录，以便以后备忘查询，也希望得到PHP专业人士的指点。

DAL

原本是想封装个DBUtility的类，但几天时间无法对PDO了解的全面和应用自如，只得把数据库相关操作混合在DAL中。

代码

php
/* ***********************************************************
DAL
wujian 2010-01-19
*********************************************************** */
define ( " DB_BASIC " , " mysql:host=localhost;dbname=asterisk " );
define ( " DB_USER " , " root " );
define ( " DB_PSWD " , " root " );

class DAL
{
     private static $pdo ;

     // 构造函数
     public function __construct()
    {
         //
    }

     // 判断分组是否存在
     public function GroupExist( $grpid )
    {
         $this -> pdo = new PDO(DB_BASIC , DB_USER , DB_PSWD);
         $cmd = " SELECT COUNT(*) FROM extension_group WHERE `grp_id` = " . $grpid ;
         $rs = $this -> pdo -> query( $cmd );
         $arr = $rs -> fetchAll();
         $this -> pdo = null ;
         if ( $arr [ 0 ][ 0 ] == 1 )
        {
             return true ;
        }
         else
        {
             return false ;
        }
    }

     // 判断分机是否存在
     public function ExtensionExist( $etn )
    {
         $this -> pdo = new PDO(DB_BASIC , DB_USER , DB_PSWD);
         $cmd = " SELECT COUNT(*) FROM extension_email WHERE `etn` = ' " . $etn . " ' " ;
         $rs = $this -> pdo -> query( $cmd );
         $arr = $rs -> fetchAll();
         $this -> pdo = null ;
         if ( $arr [ 0 ][ 0 ] == 1 )
        {
             return true ;
        }
         else
        {
             return false ;
        }
    }

     // 添加分机(分机号，分组ID，EMAIL，名称，备注)
     public function ExtensionAdd( $etn , $grpid , $email , $name , $desc )
    {
         /* prepare方式
        $stmt = $this->pdo->prepare("INSERT INTO extensionemail (`etn`, `grp_id`, `email`, `nm`, `desc`) VALUES (:a, :b, :c, :d, :e)");
        $stmt->bindParam(':a', $etn);
        $stmt->bindParam(':b', $grpid);
        $stmt->bindParam(':c', $email);
        $stmt->bindParam(':d', $name);
        $stmt->bindParam(':e', $desc);
        $stmt->execute();
         */

         /* exec方式 */
         $this -> pdo = new PDO(DB_BASIC , DB_USER , DB_PSWD);
         $cmd = " INSERT INTO extension_email (`etn`, `grp_id`, `email`, `nm`, `desc`) VALUES (' " . $etn . " ', " . $grpid . " , ' " . $email . " ', ' " . $name . " ', ' " . $desc . " ') " ;
         $s = $this -> pdo -> exec ( $cmd );
         $this -> pdo = null ;

         if ( $s == 1 ){
             return true ;
        }
         else {
             return false ;
        }
    }

     // 更新分机(分机号，分组ID，EMAIL，名称，备注)
     public function ExtensionEdit( $etn , $grpid , $email , $name , $desc )
    {
         $this -> pdo = new PDO(DB_BASIC , DB_USER , DB_PSWD);
         $cmd = " UPDATE extension_email SET `grp_id` = " . $grpid . " , `email` = ' " . $email . " ', `nm` = ' " . $name . " ', `desc` = ' " . $desc . " ' WHERE `etn` = " . $etn ;
         $s = $this -> pdo -> exec ( $cmd );
         $this -> pdo = null ;

         if ( $s == 1 ){
             return true ;
        }
         else {
             return false ;
        }
    }

     // 激活分机
     public function ExtensionAct( $etn , $state )
    {
         $this -> pdo = new PDO(DB_BASIC , DB_USER , DB_PSWD);
         $cmd = " UPDATE extension_email SET `state` = " . $state . " , `reg_time` = CURRENT_TIMESTAMP() WHERE `etn` = " . $etn ;
         $s = $this -> pdo -> exec ( $cmd );
         $this -> pdo = null ;

         if ( $s == 1 ){
             return true ;
        }
         else {
             return false ;
        }
    }

     // 分机列表
     public function ExtensionList( $grpid )
    {
         $this -> pdo = new PDO(DB_BASIC , DB_USER , DB_PSWD);
         $cmd = " SELECT * FROM extension_email WHERE `grp_id` = " . $grpid ;
         if ( $grpid == 0 )
        {
             $cmd = " SELECT * FROM extension_email " ;
        }
         $rs = $this -> pdo -> query( $cmd );
         $arr = $rs -> fetchAll();
         $this -> pdo = null ;
         return $arr ;
    }

     // 分组列表
     public function GroupList()
    {
         $this -> pdo = new PDO(DB_BASIC , DB_USER , DB_PSWD);
         $cmd = " SELECT * FROM extension_group " ;
         $rs = $this -> pdo -> query( $cmd );
         $arr = $rs -> fetchAll();
         $this -> pdo = null ;
         return $arr ;
    }

}

?>

BLL

业务层调用DAL，并为UI提供服务

代码

php
/* ***********************************************************
BLL
吴剑 2010-01-19
*********************************************************** */

require " dal.php " ;

class BLL
{
     private static $myDAL ;

     // 构造函数
     public function __construct()
    {
         $this -> myDAL = new DAL();
    }

     // 判断分组是否存在
     public function GroupExist( $grpid )
    {
         return $this -> myDAL -> GroupExist( $grpid );
    }

     // 判断分机是否存在
     public function ExtensionExist( $etn )
    {
         return $this -> myDAL -> ExtensionExist( $etn );
    }

     // 添加分机(分机号，EMAIL，名称，备注)
     public function ExtensionAdd( $etn , $grpid , $email , $name , $desc )
    {
         return $this -> myDAL -> ExtensionAdd( $etn , $grpid , $email , $name , $desc );
    }

     // 更新分机(分机号，分组ID，EMAIL，名称，备注)
     public function ExtensionEdit( $etn , $grpid , $email , $name , $desc )
    {
         return $this -> myDAL -> ExtensionEdit( $etn , $grpid , $email , $name , $desc );
    }

     // 激活分机
     public function ExtensionAct( $etn , $state )
    {
         return $this -> myDAL -> ExtensionAct( $etn , $state );
    }

     // 分机列表
     public function ExtensionList( $grpid )
    {
         return $this -> myDAL -> ExtensionList( $grpid );
    }

     // 分组列表
     public function GroupList()
    {
         return $this -> myDAL -> GroupList();
    }

}

?>

虽然在PHP中用类似CodeBehind的方式没有事件与页面控件的关联，没有Class与Page间的对象继承关系，但还是觉得这样分离逻辑会更清晰，也许长期用.Net的惯性思维，不喜欢将逻辑代码嵌套在页面中。

extension_add.php

php
require " extension_add.class.php " ;
?>

extension_edit.class.php

代码

php
/* ***********************************************************
添加分机
吴剑 2010-01-19
*********************************************************** */
// 加载公共类
require " class/common.php " ;
// 加载业务类
require " class/bll.php " ;
define ( " AUTH_KEY " , " test " );

class ExtensionAdd
{
     // 页面初始化
     static function pageLoad()
    {
         $guidID = "" ;
         // 0：成功 1：密钥无效 2：提交数据格式有误 3：分机号已存在 4：分组不存在 9：接口异常
         $result = 9 ;

         if ( isset ( $_POST [ " data " ]))
        {
             try
            {
                 $doc = new DOMDocument();
                 $doc -> loadXML( $_POST [ " data " ]);
                 $root = simplexml_import_dom ( $doc );

                 $the_authKey = $root -> head -> authKey;
                 $the_guidID = $root -> head -> guidID;
                 $the_extension = $root -> body -> extension;
                 $the_groupID = $root -> body -> groupID;
                 $the_email = $root -> body -> email;
                 $the_name = $root -> body -> name;
                 $the_desc = $root -> body -> desc;

                 $guidID = $the_guidID ;
                 // 数据格式验证
                 if (Common :: IsExtension( $the_extension ) && Common :: IsInt( $the_groupID ) && Common :: IsEmail( $the_email ))
                {
                     // 密钥验证
                     if ( $the_authKey == AUTH_KEY)
                    {
                         // 创建业务对象
                         $myBLL = new BLL();

                         // 分机是否存在
                         if ( $myBLL -> ExtensionExist( $the_extension ))
                        {
                             $result = 3 ;
                        }
                         else
                        {
                             // 分组是否存在
                             if ( $myBLL -> GroupExist( $the_groupID ))
                            {
                                 if ( $myBLL -> ExtensionAdd( $the_extension , $the_groupID , $the_email , $the_name , $the_desc ))
                                {
                                     $result = 0 ;
                                }
                            }
                             else
                            {
                                 $result = 4 ;
                            }
                        }
                    }
                     else
                    {
                         // 密钥无效
                         $result = 1 ;
                    }
                }
                 else
                {
                     // 数据格式有误
                     $result = 2 ;
                }
            }
             catch ( Exception $e )
            {
                 // 数据格式有误
                 $result = 2 ;
            }
        }
         else
        {
             // 提交数据格式有误
             $result = 2 ;
        }

         $xml = " " ;
         $xml = $xml . " " ;
         $xml = $xml . " " ;
         $xml = $xml . " " . $guidID . " " ;
         $xml = $xml . " " ;
         $xml = $xml . " " ;
         $xml = $xml . " " . $result . " " ;
         $xml = $xml . " " ;
         $xml = $xml . " " ;

         // 指定页面编码
         header ( " content-type:text/xml; charset=utf-8 " );
         echo ( $xml );
    }
}

ExtensionAdd :: pageLoad();

?>

extension_list.class.php

代码

php
/* ***********************************************************
分机列表
吴剑 2010-01-19
*********************************************************** */
// 加载业务类
require " class/bll.php " ;
define ( " AUTH_KEY " , " test " );

class ExtensionList
{
     // 页面初始化
     static function pageLoad()
    {
         $guidID = "" ;
         // 0：成功 1：密钥无效 2：提交数据格式有误 3：分机号已存在 4：分组不存在 9：接口异常
         $etn = "" ;

         if ( isset ( $_POST [ " data " ]))
        {
             try
            {
                 $doc = new DOMDocument();
                 $doc -> loadXML( $_POST [ " data " ]);
                 $root = simplexml_import_dom ( $doc );

                 $the_authKey = $root -> head -> authKey;
                 $the_guidID = $root -> head -> guidID;
                 $the_groupID = $root -> body -> groupID;

                 $guidID = $the_guidID ;
                 // 密钥验证
                 if ( $the_authKey == AUTH_KEY)
                {
                     // 创建业务对象
                     $myBLL = new BLL();
                     $arr = $myBLL -> ExtensionList( $the_groupID );
                     foreach ( $arr as $row )
                    {
                         $etn = $etn . " " ;
                         $etn = $etn . " " . $row [ " etn " ] . " " ;
                         $etn = $etn . " " . $row [ " grp_id " ] . " " ;
                         $etn = $etn . " " . $row [ " email " ] . " " ;
                         $etn = $etn . " " . $row [ " nm " ] . " " ;
                         $etn = $etn . " " ;
                         $etn = $etn . " " . $row [ " state " ] . " " ;
                         $etn = $etn . " " . $row [ " reg_time " ] . " " ;
                         $etn = $etn . " " ;
                    }
                }
            }
             catch ( Exception $e )
            {
                 //
            }
        }

         $xml = " " ;
         $xml = $xml . " " ;
         $xml = $xml . " " ;
         $xml = $xml . " " . $guidID . " " ;
         $xml = $xml . " " ;
         $xml = $xml . " " . $etn . " " ;
         $xml = $xml . " " ;

         // 指定页面编码
         header ( " content-type:text/xml; charset=utf-8 " );
         echo ( $xml );
    }
}

ExtensionList :: pageLoad();

?>

Common

主要应用了正则表达式

代码

php
/* ***********************************************************
公共
吴剑 2010-01-19
*********************************************************** */

class Common
{
     // 非空验证
     static function IsNon( $str )
    {
         return true ;
    }

     // 正整数验证
     static function IsInt( $str )
    {
         $reg = " ^[0-9]+$ " ;
         if ( ereg ( $reg , $str ))
        {
             return true ;
        }
         else
        {
             return false ;
        }
    }

     // 分机号格式验证
     static function IsExtension( $str )
    {
         $reg = " ^[0-9]+$ " ;
         if ( ereg ( $reg , $str ))
        {
             return true ;
        }
         else
        {
             return false ;
        }
    }

     // Email格式验证
     static function IsEmail( $str )
    {
         $reg = " ^([_a-zA-Z0-9+\.]+@([_a-zA-Z0-9]+\.)+[a-zA-Z0-9]{2,4})?$ " ;
         if ( ereg ( $reg , $str ))
        {
             return true ;
        }
         else
        {
             return false ;
        }
    }
}

?>